a basketball and a pump costs 31 dollars. if the basketball costs three times as much as the pump, how much does each item cost?

basketball = 7.75 dollar

pump = 23.25 dollar

Step-by-step explanation:

basketball and a pump costs = b + p = 31 dollars

Assume that;

basketball = b

pump = p

Given that;

basketball costs three times as much as the pump

3b = p

Put value of p in total cost equation:

b + p = 31

b + 3b = 31

b = 31/4 = 7.75

Put value of b in same equation

b + p = 31

p = 31 - 31/4

= 93/4 = 23.25